Siemens RVA47.320 User Manual page 126

Note
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in the case of heat generation lock via contact H and when there is no buffer
storage tank sensor based on B10 or B2.
When protection against discharging of the d.h.w. is active, the boost of the flow
temperature (operating line 126) is checked during the heating cycle:
•
If at least half the boost value is reached, d.h.w. heating will be released
•
If the boost value is less than 1/8 of the value set, d.h.w. heating will not be
released
Setting 1 may be used only if the cascade return temperature sensor is connected.
Basic Documentation RVA47.320
Description of the OEM settings
CE1P2379E
15.07.2002